Absorption spectra single crystals

In the single crystal absorption spectra of CrF2 and CrCl2 the pattern of spin-allowed (quintet-quintet) bands for the ammines and hydrates is repeated. Gaussian analysis of the higher wavenumber bands has allowed assignments of all three transitions and calculation of... 

Fig. 9. Polarised single crystal absorption spectra at T = 9 K of [Ir(thpy)2bpy] + doped into [Rh(ppy)2bpy]PF6. The spectra...

Pyrazine forms an azeotrope with water [60% pyrazine-40% water, b.p. 95.5° (uncorr.) (760mmHg) /ip 1.4510] (578). A method of assay for pyrazine and some common impurities has been developed (579). The dipole moment (Debye units) of pyrazine has been determined in dioxane, cyclohexane, and benzene as zero (580, cf. 581) and it has also been calculated as zero (133, 582). The e.s.r. spectrum (583) and the polarized single-crystal absorption spectra of pyrazine (and tetramethylpyrazine) (584) have been recorded. The photoelectron spectra of pyrazine and tetramethylpyrazine have been determined and suggest a different behavior towards electrophilic attack in the two cases (585). 

Figure 6-19. Comparison of the b- and c-polarized single crystal absorption spectra at 4.2 K with the unpolarized absorption spectrum of a polycrystalline thin film at 1.6 K. Note that the origin is also observed in the film.

Fig. 5a,b. Single crystal absorption spectra at 4.2 K of Cs2U02Cl4 near 20,095 cm (a) natural isotopic abundances and (b) containing 80% oxygen-18 from Ref. [125]... 

Ballhausen CJ, Trabjerg I (1972) Confirmation of the Red band system in Mn04 as 1 Tj <— Ai from the effect of pressure on single crystal absorption spectra. Mol Phys 24(4) 689-693... 

Fig. 4 Single crystal absorption spectra of [NaCr(ox)3][Cr(bpy)3]C104 at 15 K (adapted from [16])...

Figure 6 Polarized single-crystal absorption spectra of K2PdBr4 at 8 K. Vertical lines above the spectra indicate the lowest-energy calculated ligand-field states. The spectrum in cr polarization is shifted along the...

Figure 7 Polarized single-crystal absorption spectra of tra j-NiCl2(H20)4 recorded at 5K. Vertical lines above the experimental spectra indicate the single and double progressions observed in cr and tt polarization, respectively. The bottom trace is a calculated spectrum obtained with the time-dependent theoretical...

Figure 3 Single-crystal absorption spectra of [Zni vFev(mepy)3tren](PF6)2, x = 0.05% at 295K (.), at...

Single crystal absorption spectra (unpolarized) of [Fe(ptz)6l(BF4)2 before bleaching (b.b.) and after bleaching (a.b.) at 8K for 2 min with white light. (Reproduced from Ref. 11 with permission of the American Chemical Society.)... 

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